SONY DVPNC685V - Service Manual Immediate Download

SERVICE MANUAL

US Model

CD/DVD PLAYER

DVP-NC685V

RMT-D159A

SPECIFICATIONS

System

Laser: Semiconductor laser

Signal format system: NTSC

Audio characteristics

Frequency response: DVD VIDEO (PCM

96 kHz): 2 Hz to 44 kHz (44 kHz: 2 dB

±1 dB)/Super Audio CD: 2 Hz to

100 kHz (50 kHz: 3 dB

±1dB)/CD:

2Hz to 20 kHz (

±0.5 dB)

Signal-to-noise ratio (S/N ratio): 115 dB

(LINE OUT L/R (AUDIO) 1/2 jacks

only)

Harmonic distortion: 0.003 %

Dynamic range: DVD VIDEO/Super Audio

CD: 103 dB/CD: 99 dB

Wow and flutter: Less than detected value

(

±0.001% W PEAK)

Outputs

(Jack name: Jack type/Output level/Load

impedance)

LINE OUT (AUDIO) 1/2: Phono jack/

2Vrms/10 kilohms

DIGITAL OUT (OPTICAL): Optical

output jack/18 dBm (wave length:

660 nm)

DIGITAL OUT (COAXIAL): Phono jack/

0.5 Vp-p/75 ohms

5.1CH OUTPUT: Phono jack/2 Vrms/

10 kilohms

COMPONENT VIDEO OUT(Y, PB, PR):

Phono jack/Y: 1.0 Vp-p/PB, PR:

interlace*=0.648 Vp-p, progressive or

interlace**=0.7 Vp-p/75 ohms

*BLACK LEVEL is ON

** BLACK LEVEL is OFF

LINE OUT (VIDEO) 1/2: Phono jack/

1.0 Vp-p/75 ohms

S VIDEO OUT 1/2: 4-pin mini DIN/Y:

1.0 Vp-p, C: 0.286 Vp-p/75 ohms

General

Power requirements:

120V AC, 60 Hz

Power consumption:

19 W

Dimensions (approx.):

430

× 95.5 × 409 mm (17 × 3 6/8 × 16 1/8

in.) (width/height/depth) incl. projecting

parts

Mass (approx.): 5.0 kg (11 1/32 lb)

Operating temperature: 5

°C to 35 °C

(41 °F to 95 °F)

Operating humidity: 25 % to 80 %

Supplied accessories

Specifications and design are subject to

change without notice.

Check that you have the following items:

·Audio/video cord

(pinplug

× 3 y pinplug × 3) (1)

·Remote commander (remote) (1)

·Size AA (R6) batteries (2)

WARNING!!

WHEN SERVICING, DO NOT APPROACH THE LASER

EXIT WITH THE EYE TOO CLOSELY. IN CASE IT IS

NECESSARY TO CONFIRM LASER BEAM EMISSION,

BE SURE TO OBSERVE FROM A DISTANCE OF

MORE THAN 25 cm FROM THE SURFACE OF THE

OBJECTIVE LENS ON THE OPTICAL PICK-UP BLOCK.

CAUTION

Use of controls or adjustments or performance of procedures

other than those specified herein may result in hazardous ra-

diation exposure.

SAFETY-RELATED COMPONENT WARNING!!

COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED

LINE WITH MARK 0 ON THE SCHEMATIC DIAGRAMS

AND IN THE PARTS LIST ARE CRITICAL TO SAFE

OPERATION. REPLACE THESE COMPONENTS WITH

SONY PARTS WHOSE PART NUMBERS APPEAR AS

SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUB-

LISHED BY SONY.

CAUTION:

The use of optical instrument with this product will increase eye

hazard.

Fig. A.

Using an AC voltmeter to check AC leakage.

1.5 k

0.15 µF

voltmeter

(0.75 V)

To Exposed Metal

Parts on Set

Earth Ground

LEAKAGE TEST

The AC leakage from any exposed metal part to earth ground

and from all exposed metal parts to any exposed metal part having

a return to chassis, must not exceed 0.5 mA (500 microamperes).

Leakage current can be measured by any one of three methods.

1. A commercial leakage tester, such as the Simpson 229 or RCA

WT-540A. Follow the manufacturers' instructions to use these

instruments.

2. A battery-operated AC milliammeter. The Data Precision 245

digital multimeter is suitable for this job.

3. Measuring the voltage drop across a resistor by means of a

VOM or battery-operated AC voltmeter. The "limit" indica-

tion is 0.75V, so analog meters must have an accurate low-

voltage scale. The Simpson 250 and Sanwa SH-63Trd are ex-

amples of a passive VOM that is suitable. Nearly all battery

operated digital multimeters that have a 2V AC range are suit-

able. (See Fig. A)

1. Check the area of your repair for unsoldered or poorly-sol-

dered connections. Check the entire board surface for solder

splashes and bridges.

2. Check the interboard wiring to ensure that no wires are

"pinched" or contact high-wattage resistors.

3. Look for unauthorized replacement parts, particularly transis-

tors, that were installed during a previous repair. Point them

out to the customer and recommend their replacement.

4. Look for parts which, though functioning, show obvious signs

of deterioration. Point them out to the customer and recom-

mend their replacement.

5. Check the line cord for cracks and abrasion. Recommend the

replacement of any such line cord to the customer.

6. Check the B+ voltage to see it is at the values specified.

7. Check the antenna terminals, metal trim, "metallized" knobs,

screws, and all other exposed metal parts for AC leakage.

Check leakage as described below.

SAFETY CHECK-OUT

After correcting the original service problem, perform the following

safety checks before releasing the set to the customer:

Unleaded solder

Boards requiring use of unleaded solder are printed with the lead-

free mark (LF) indicating the solder contains no lead.

(Caution: Some printed circuit boards may not come printed with

the lead free mark due to their particular size.)

: LEAD FREE MARK

Unleaded solder has the following characteristics.

· Unleaded solder melts at a temperature about 40

°C higher than

ordinary solder.

Ordinary soldering irons can be used but the iron tip has to be

applied to the solder joint for a slightly longer time.

Soldering irons using a temperature regulator should be set to

about 350

°C.

Caution: The printed pattern (copper foil) may peel away if the

heated tip is applied for too long, so be careful!

· Strong viscosity

Unleaded solder is more viscous (sticky, less prone to flow) than

ordinary solder so use caution not to let solder bridges occur

such as on IC pins, etc.

· Usable with ordinary solder

It is best to use only unleaded solder but unleaded solder may

also be added to ordinary solder.

TABLE OF CONTENTS

Section

Title

Page

Section

Title

Page

Service Note ............................................................................ 4

GENERAL

About This Manual ........................................................ 1-1

This Player Can Play the Following Discs .................... 1-1

Notes About the Discs ................................................... 1-1

Index to Parts and Controls .......................................... 1-1

Guide to the Control Menu Display ............................... 1-2

Hookups ........................................................................ 1-3

Playing Discs ................................................................. 1-7

Searching for a Scene ................................................... 1-10

Viewing Information About the Disc .............................. 1-11

Sound Adjustments ....................................................... 1-12

Enjoying Movies ............................................................ 1-14

Using Various Additional Functions .............................. 1-15

Settings and Adjustments ............................................. 1-17

Additional Information ................................................... 1-19

Language Code List ...................................................... 1-20

DISASSEMBLY

2-1.

Disassembly .................................................................. 2-1

2-2.

Upper Case ................................................................... 2-2

2-3.

Power Block ................................................................... 2-2

2-4.

DV-35 Board .................................................................. 2-3

2-5.

Rear Panel Section ....................................................... 2-3

2-6.

AV-74 Board .................................................................. 2-4

2-7.

MB-110 Board ............................................................... 2-4

2-8.

Front Panel Section ....................................................... 2-5

2-9.

Table Assembly ............................................................. 2-5

2-10. Loading Motor Assembly ............................................... 2-6

2-11. Optical Pick-up .............................................................. 2-6

2-12. Internal Views ................................................................ 2-7

2-13. Circuit Boards Location ................................................. 2-8

BLOCK DIAGRAMS

3-1.

Overall Block Diagram ................................................... 3-1

3-2.

RF/Servo Block Diagram ............................................... 3-3

3-3.

Signal Processor Block Diagram .................................. 3-5

3-4.

System Control Block Diagram ..................................... 3-7

3-5.

Video (1) Block Diagram ............................................... 3-9

3-6.

Video (2) Block Diagram ............................................... 3-11

3-7.

Audio (1) Block Diagram ............................................... 3-13

3-8.

Audio (2) Block Diagram ............................................... 3-15

3-9.

Interface Control Block Diagram ................................... 3-17

3-10. Power (1) Block Diagram .............................................. 3-19

3-11. Power (2) Block Diagram .............................................. 3-21

PRINTED WIRING BOARDS AND SCHEMATIC

DIAGRAMS

4-1.

Frame Schematic Diagram ............................................ 4-3

4-2.

Printed Wiring Boards and Schematic Diagrams ......... 4-5

MB-110 (RF AMP, SERVO) Schematic Diagram .......... 4-9

MB-110 (ARP, SERVO DSP) Schematic Diagram ........ 4-11

MB-110 (AV DECODER) Schematic Diagram .............. 4-13

MB-110 (MOTOR DRIVE) Schematic Diagram ............ 4-15

MB-110 (SYSTEM CONTROL) Schematic Diagram .... 4-17

MB-110 (CLOCK GENERATOR)

Schematic Diagram ....................................................... 4-19

MB-110 (I/P CONVERTER) Schematic Diagram ......... 4-21

MB-110 (VIDEO ENCODER) Schematic Diagram ....... 4-23

MB-110 (AUDIO DSP) Schematic Diagram .................. 4-25

MB-110 (8ch DAC) Schematic Diagram ....................... 4-27

MB-110 (RELAY) Schematic Diagram .......................... 4-29

MB-110 (SACD DECODER) Schematic Diagram ........ 4-31

AV-74 Printed Wiring Board .......................................... 4-33

AV-74 (VIDEO BUFFER) Schematic Diagram .............. 4-37

AV-74 (5.1CH AUDIO AMP) Schematic Diagram ......... 4-39

AV-74 (AUDIO AMP) Schematic Diagram .................... 4-41

FR-201 (FUNCTION SWITCH)

Printed Wiring Board and Schematic Diagram ............. 4-43

IF-103 Printed Wiring Board ......................................... 4-45

IF-103 (IF CON) Schematic Diagram ........................... 4-49

DV-35 Printed Wiring Board .......................................... 4-51

DV-35 (CONNECTOR) Schematic Diagram ................. 4-53

SW-396 (FUNCTION SWITCH)

Printed Wiring Board and Schematic Diagram ............. 4-55

PL-33 (LED)

Printed Wiring Board and Schematic Diagram ............. 4-57

MD-94 (MD INTERFACE), SE-130 (SENSOR)

Printed Wiring Boards and Schematic Diagram ........... 4-59

IC PIN FUNCTION DESCRIPTION

5-1.

System Control Pin Function

(MB-110 Board IC104) .................................................. 5-1

TEST MODE

6-1.

General Description ...................................................... 6-1

6-2.

Starting Test Mode ........................................................ 6-1

6-3.

Syscon Diagnosis .......................................................... 6-1

6-4.

Drive Auto Adjustment .................................................. 6-5

6-5.

Drive Manual Operation ................................................ 6-7

6-6.

Mecha Test Mode .......................................................... 6-11

6-7.

Emergency History ........................................................ 6-11

6-8.

Version Information ....................................................... 6-11

6-9.

Video Level Adjustment ................................................ 6-11

6-10. IF CON Self Diagnostic Function .................................. 6-12

6-11. Troubleshooting ............................................................. 6-19

6-12. Mechanism Test Mode Adjustment ............................... 6-22

ELECTRICAL ADJUSTMENT

7-1.

Power Supply Check ..................................................... 7-1

SRV1439UC Board ....................................................... 7-1

7-2.

Adjustment of Video System ......................................... 7-2

Video Level Adjustment (MB-110 Board) ..................... 7-2

Progressive Video Output Level Adjustment

(MB-110 Board) ............................................................. 7-2

Checking S Video Output S-Y ....................................... 7-2

Checking S Video Output S-C ....................................... 7-2

Checking Component Video Output Y .......................... 7-3

Checking Component Video Output B-Y ...................... 7-3

Checking Component Video Output R-Y ...................... 7-3

7-3.

Adjustment Related Parts Arrangement ....................... 7-4

REPAIR PARTS LIST

8-1.

Exploded Views ............................................................. 8-1

8-1-1. Overall Section ......................................................... 8-1

8-1-2. Front Panel Section .................................................. 8-2

8-1-3. Loading Section ....................................................... 8-3

8-1-4. Chassis Section ....................................................... 8-4

8-2.

Electrical Parts List ....................................................... 8-5

Table Ass'y

Plate (guide)

Flexible flat cable

(FMS-18: CN002)

Two tapping screws

Three screws (B3)

SERVICE NOTE

NOTE ON REMOVING THE UPPER CASE

1) Remove the four tapping screws and three screws. (See Fig. 1)

2) Open the sides of case. (See Fig. 1)

3) Remove the upper case in the direction of the arrow A.

Fig. 1

Fig. 2

Fig. 3

Fig. 4

DISC REMOVAL PROCEDURE

1) Insert a flat-head (-) screwdriver into a hole at the bottom, and

rotate the cam gear in the direction of the arrow A. (See Fig.2)

NOTE ON REMOVING THE TABLE ASS'Y

1) Remove the two screws. (See Fig. 3)

2) Remove the two Plates (guide) in the direction of the arrows

and B.

3) Remove the Table ass'y in the direction of the arrow C.

4) Remove the Flexible flat cable (See Fig. 4).

Cam gear

Hole

Table

Screw

(M2.6 × 8)

Screw

(M2.6 × 8)

Engagement the gear (swing) and the gear (chuck).

Gear (swing)

Gear (idler)

Gear

(idler)

Gear (chuck)

Align triangle mark of the chassis

with the groove of the gear (swing).

Gear (swing)

Boss

Groove

Fig. 6

Fig. 5

Fig. 7

NOTE ON MOUNTING THE GEARS

1) Mount the gear (chuck). (See Fig. 5)

2) Rotate the gear (chuck) in the direction of the arrow. (down

position) (See Fig. 5)

3) Connect the boss of the gear (swing) with the groove of the

rotary encoder and mount the gear (swing). (See Fig. 6)

4) Align triangle mark of the chassis with the groove of the gear

(swing).

5) Mount the gear (idler) while aligning the engagement of the

gear (swing) and the gear (chuck). (See Fig. 7)

Gear (chuck)